RADT EXAM 2026 PRACTICE QUESTION SET
TWO
◉ auto-tracking. Answer: a feature of modern x-ray systems that
enables simultaneous vertical movement of an upright image
receptor and overhead x-ray tube
◉ anode. Answer: the positive electrode in the x-ray tube
◉ bucky mechanism. Answer: grid that is an integral part of the x-
ray table, located below the tabletop and above a cassette tray;
decreases the amount of scatter radiation reaching the image
receptor, which increases contrast; moves during exposure so that
no grid lines appear on the image
◉ cassette. Answer: (FILM) lightproof holder for the image receptor.
It may be a computerized radiography (CR) plate or a wireless,
digital radiography (DR) panel
◉ cathode. Answer: The negative electrode in the x-ray tube
◉ collimator. Answer: An essential device designed to define the
dimensions and directions of the x-ray beam. This device consists of
four rectilinear, radiopaque blades that are adjustable to control the
,x-rays field size and shape. The collimator may be operated
manually or automatically. contains a mirror, shutters,
◉ cyrogen. Answer: a cooling refrigerant that is used to reduce
external temperatures to a very low level. This is required in high
MR systems and typically is accomplished using liquid helium (-452
F) to create a state of magnetic superconductivity
◉ diagnostic yield. Answer: The amount of clinically useful,
diagnostic information that is produced by a medical imaging
modality
◉ all diagnostic procedures have an expected _______ of medical info
regarding the patient's condition.. Answer: yield
◉ The amount of clinically useful medical information about the
patient is the procedures' _____________.. Answer: yield
◉ DXA. Answer: Dual Emission X-ray Absorptiometry; x-ray
technology that is used to assess bone density and bone health.
Statistical calculations yield a T-score and fracture risk assessment
(FRAX)
◉ digital imaging. Answer: acquisition of static images in an
electronic fashion to create an electronic data set
,◉ diode. Answer: An electrical component that possesses polarity
with a negative and positive terminal ( cathode + / anode -)
◉ Flat Panel Detector (FPD). Answer: type of digital detector
employing amorphous silicon or selenium material bonded with
thin-film transistor technology for digital image creation and
amplification
◉ fluoroscope. Answer: device used for dynamic radiographic
examinations; usually consists of an x-ray tube situated underneath
the x-ray table and an electronic image detector situated over the x-
ray table
◉ fluoroscopy. Answer: Examination of a patient with a fluoroscope,
employing image intensification or flat panel detector
◉ gamma camera. Answer: may have one or two detector heads and
may rotate around the patient as a series of images taking multiple
scintillation views of the patient as it rotates. these images are
processed to computer and make up SPECT scan (single photon
emission computed tomography) study
, ◉ gantry. Answer: Term used to express the equipment component
that contains major technological components comprising a CT or
MR scanne
◉ goniometer. Answer: Angulation scale incorporated into the x-ray
tubehead assembly to indicate the degree of x-ray tube angle relative
to the image receptor
◉ latent image. Answer: Invisible image created electronically after
x-ray exposure and before image processing
◉ Perfusion. Answer: flow of blood or lymphatic fluids into and out
of cells as a functions of cell metabolism
◉ Picture Archiving and Communication System (PACS). Answer:
Computer network for the transmission, viewing, and archival
storage of medical images; often integrated into a larger hospital
information system (HIS) and radiology information system (RIS)
◉ Piezoelectric Crystal. Answer: An integral component of the
ultrasound transducer that converts electrical energy into sound
energies of various frequencies above the human audible range.
These crystals also convert sound energy (echoes) into electrical
signals that become the sonographic image
TWO
◉ auto-tracking. Answer: a feature of modern x-ray systems that
enables simultaneous vertical movement of an upright image
receptor and overhead x-ray tube
◉ anode. Answer: the positive electrode in the x-ray tube
◉ bucky mechanism. Answer: grid that is an integral part of the x-
ray table, located below the tabletop and above a cassette tray;
decreases the amount of scatter radiation reaching the image
receptor, which increases contrast; moves during exposure so that
no grid lines appear on the image
◉ cassette. Answer: (FILM) lightproof holder for the image receptor.
It may be a computerized radiography (CR) plate or a wireless,
digital radiography (DR) panel
◉ cathode. Answer: The negative electrode in the x-ray tube
◉ collimator. Answer: An essential device designed to define the
dimensions and directions of the x-ray beam. This device consists of
four rectilinear, radiopaque blades that are adjustable to control the
,x-rays field size and shape. The collimator may be operated
manually or automatically. contains a mirror, shutters,
◉ cyrogen. Answer: a cooling refrigerant that is used to reduce
external temperatures to a very low level. This is required in high
MR systems and typically is accomplished using liquid helium (-452
F) to create a state of magnetic superconductivity
◉ diagnostic yield. Answer: The amount of clinically useful,
diagnostic information that is produced by a medical imaging
modality
◉ all diagnostic procedures have an expected _______ of medical info
regarding the patient's condition.. Answer: yield
◉ The amount of clinically useful medical information about the
patient is the procedures' _____________.. Answer: yield
◉ DXA. Answer: Dual Emission X-ray Absorptiometry; x-ray
technology that is used to assess bone density and bone health.
Statistical calculations yield a T-score and fracture risk assessment
(FRAX)
◉ digital imaging. Answer: acquisition of static images in an
electronic fashion to create an electronic data set
,◉ diode. Answer: An electrical component that possesses polarity
with a negative and positive terminal ( cathode + / anode -)
◉ Flat Panel Detector (FPD). Answer: type of digital detector
employing amorphous silicon or selenium material bonded with
thin-film transistor technology for digital image creation and
amplification
◉ fluoroscope. Answer: device used for dynamic radiographic
examinations; usually consists of an x-ray tube situated underneath
the x-ray table and an electronic image detector situated over the x-
ray table
◉ fluoroscopy. Answer: Examination of a patient with a fluoroscope,
employing image intensification or flat panel detector
◉ gamma camera. Answer: may have one or two detector heads and
may rotate around the patient as a series of images taking multiple
scintillation views of the patient as it rotates. these images are
processed to computer and make up SPECT scan (single photon
emission computed tomography) study
, ◉ gantry. Answer: Term used to express the equipment component
that contains major technological components comprising a CT or
MR scanne
◉ goniometer. Answer: Angulation scale incorporated into the x-ray
tubehead assembly to indicate the degree of x-ray tube angle relative
to the image receptor
◉ latent image. Answer: Invisible image created electronically after
x-ray exposure and before image processing
◉ Perfusion. Answer: flow of blood or lymphatic fluids into and out
of cells as a functions of cell metabolism
◉ Picture Archiving and Communication System (PACS). Answer:
Computer network for the transmission, viewing, and archival
storage of medical images; often integrated into a larger hospital
information system (HIS) and radiology information system (RIS)
◉ Piezoelectric Crystal. Answer: An integral component of the
ultrasound transducer that converts electrical energy into sound
energies of various frequencies above the human audible range.
These crystals also convert sound energy (echoes) into electrical
signals that become the sonographic image
